Cup holder



FIG. 1 is an isometric view of a cup holder, according to an embodiment of the invention;

FIG. 2 is a front view of the cup holder thereof;

FIG. 3 is a rear view of the cup holder thereof;

FIG. 4 is a top view of the cup holder thereof;

FIG. 5 is a bottom view of the cup holder thereof; and,

FIG. 6 is a left side view of the cup holder thereof, with a right side view being a mirror image of the left side view. 

The ornamental design for a cup holder, as shown and described. 